Tool-maker&#39;s clamp.



No. 685,078. Patented 00f. 22, IN".

G. WILLRINGHAUS.

TOOL MAKEBS CLAMP.

(Application filed Jan. 22. 1901.]

2 Sheets-Sheet I.

(No Model.)

lNVE-NTOR WITNESSES:

ATTORN EYS.

mi uonms PETERS c0. FHOTO-UTHQ. wnsummou. n c.

Patented Oct; 22, IQOI.

TOOL MAKER'S CLAMP.

(Application filed Jan. 22. 190 1.)

2 sheets- -shee't 2.

(No Model.)

|NVENTOR= Wampum ATTORN EYS.

w: mums PETERS p0, vuploLn'HCL. vqsmnmon.

UNITED STATE GUSTAV WILLRINGHAUS, OF NEWARK, NEW JERSEY.

TOOL-MAKERS CLAMP.

SPECIFICATION forming part of Letters Patent No. 685,078, dated October22, 1901. Application filed January 22, 1901. Serial No. 44,268. (Nomodel.)

To all whom it may concern:

Be it known that I, GUsTAv WILLRINGHAUS, a citizen of the United States,residing at N ewark,in the county of Essex and State of New Jersey, haveinvented certain new and useful Improvements in TooleMakers Clamps; andI do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to letters of reference markedthereon, which form a part of this specification.

The objects of thisinvention are to facilitate the operation of markingoff or planing Work preliminary to cutting or piercing dies, to secure agreater exactness of work, to avoid the loss incident to the methodsheretofore employed, and to secure other advantages and results, some ofwhich may be referred to hereinafter in connection with the descriptionof the working parts.

The invention consists in the improved toolmakers clamp and in thearrangements and combinations of parts of the same, all substantially aswill be hereinafter set forth, and finally embraced in the clauses ofthe claim.

Referring to the accompanying drawings, in which like letters ofreference indicate corresponding parts in each of the several views,Figure l is a front elevation of the improved clamp in its preferredform. Fig. 2 is a plan of the same. Fig. 3 is an end view thereof. Figs.t and 5 are respectively a side view and a plan showing a modificationof construction sometimes employed where a series of clamps are founddesirable. Figs.

- 6, 7, and 8 are respectively a plan, side elevation, and end view ofanother modification of construction which may be employed effectively.

In said drawings, a a a indicate two parallel bars having thereon endpieces, which are preferably slides b b, adapted to be moved toward orfrom one another oppositely with convenience to enable the clamp to beadjusted to the desired work. From said end pieces or slides, whichserve to hold the parallel rods in proper relative position apart, aredepending legs 0 0, having feet (1 at their lower extremities. Said legsare each preferably formed of a single piece of metal rod bent U shape,the upper extremities entering the slides b and being securely heldtherein in any suitable manner. The bowed part of the legs, at the lowerends thereof, are bent inwardly or horizontally toward one another, asshown in Fig. 1, to form seats or bearings upon which the die-plate maybe seated at its opposite ends. Intermediate of said legs 0 c andadjustable on the rods a a is another slide a, which also extends fromone roda to the other, and intermediate of its length the said slide eis perforated and threaded to receive a clamping-screw f. Saidclamping-screw at its upper end is provided with wings g or other meansto receive the band and enable said screw to be conveniently turned toclamp the pattern or blank t against the die-plate h, as will behereinafter described. V

I may vary the construction, as indicated in Figs. 4 to 8, byextendingthe length of the clamp, and instead of forming the legs 0 each of a.single piece the said legs may be formed of three or more pieces, as inFigs. 4 and 5, where the said legs consistof two downwardlyextendingrods joined at their lower extremities by footpieces, which extend fromone leg to the other, being held thereon by nuts or by any suitablemeans. In this case the clamp is provided with two or more adjustableclam ping-screws 1, arranged between thelegs, as shown. I may dispensewith the two separate horizontal rods at the top and form the slidewayof a single piece of metal slotted, as shown in Figs. 6, 7,and 8, andprovided with integral end pieces to receive the legs, and various othermodifications maybe made without departing from the spirit or scope ofthe invention; but in ordinary practice I prefer the construction firstdescribed, in that it is simple and cheap.

In operating the device,the legs 0 and clamping-screw f being properlyadjusted on the slideways to suit the desired work, the dieplate h isseated upon the feet cl between the legs 0 c, as shown, and a pattern orblank t' is laid therein, and the space between the screw f and theblank 1;, should there be any, is taken up by a block j, which is laidupon the pattern or blank beneath the screw f, af+

ter which the said screw is turned so that the said blank or patternwill be rigidly and operation, and thus the danger of imperfect securelyclamped in its relation to the dieplate h. This having beenaccomplished, the outlines of the desired cutting or engraving aremarked oif on the die-plate by means of a tool, scratch-awl, scri'ber,file, or other implement, and in performing this work there is no dangerof the pattern shifting from its position,so that the described outlinesare rendered erroneous. This scribing can be repeated two or more timeswithout any danger of shifting, so that the Workman can obtain a goodsharp outline to work from.

The die-plate it, having received the outline or plan, may be removedfrom the clamp and cut out and the die completed, and a second member ofthe die is laid out from the first. To secure said second die, the plate7b is again inserted in the clamp upon the feet or seats (1, and theplate from which the said second die member is to be formed is laidthereon and clamped and held firmly in position by means of the screw f.The clamp may be then turned upside down and the outlines of the worklaid out upon said second member, the workman scratching the secondmember from the bottom of the plate 71 through the perforation therein,and inasmuch as the two die members are rigidly clamped together by thescrewf there is no danger of shiftingin performing this second workbecause of sliding is entirely eliminated.

Having thus described the invention, what I claim as new is 1. Theimproved tool-makers clamp, comprising parallel bars connected bysliding end pieces 17, b, legs secured to said end pieces and havinginwardly-projecting feet and an adjustable clamping-screw supported bysaid bars at a point between said legs, substantially as set forth.

2. The improved tool-makers clamp, comprising parallel bars, slidesarranged near the opposite ends of said bars and legs connected to saidslides and formed of U-shaped rods bent inwardly at their lower parts toform feet, and a clamping devicearranged between said legs,substantially as set forth.

3. Theimproved tool-makers clamp, comprising parallel bars,adj ustablelegs arranged on said bars and having feet providing seats for thedie-plate and clamping means interposed between the legs, substantiallyas set forth.

In testimony that I claim the foregoing I have hereunto set my hand this5th day of January, 1901.

GUSTAV VVILLRINGIIAUS.

XVitnesses:

CHARLES H. PELL, C. B. PITNEY.

